Miami Dolphins wide receiver Jarvis Landry is under investigation for battery.Dolphins head coach Adam Gase confirmed the investigation Monday morning when he spoke with reporters at the team's training camp in Davie.The investigation stems from an incident in Fort Lauderdale involving Landry and the mother of his child, per reports. Gase did not elaborate any further.Police looked into the matter when it arose months ago, but no charges were filed. Landry reportedly cooperated and provided information to the Dolphins.Landry and the Dolphins have been discussing a contract extension this offseason but have not reached an agreement.